Fig. 2From: The high-risk features and effect of postoperative radiotherapy on survival for patients with surgically treated stage IIIA-N2 non-small cell lung cancerKaplan–Meier curves of the OS and CSS between PORT and non-PORT before and after PSM. A OS curves before PSM. B CSS curves before PSM. C OS curves after PSM. D CSS curves after PSM. OS: overall survival, CSS: cancer-specific survival, PSM: propensity score-matchingBack to article page